* {
  margin: 0;
  padding: 0;
}
.FrontCover{
  width: 100vw;
  height: 100vh;
  p{
    height: 33vh;
  }
  >div{
    
    width: 50%;
    margin: 0 auto;
  }
  img{
    width: 100%;
  }
}
.nav {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100vw;
  height: 9vh;
  background: white;
  z-index: 16;
  // box-sizing: border-box;
  padding-top: .153333rem;

  >div {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-around;
    box-sizing: border-box;
    background: white;

    >a {
      text-decoration: none;
      -webkit-tap-highlight-color: rgba(255, 0, 0, 0);
      display: inline-block;
      width: 1.666667rem;
      // height: 100%;
      text-align: center;
      // line-height: 1.466667rem;
      color: black;
      font-size: .32rem;

      i {
        font-size: .51rem !important;
        display: inline-block;
        width: 100%;
        margin-bottom: -.2rem;
      }
    }

    .appActive {
      color: rgb(179, 115, 19);
    }
  }
}

.App {
  width: 100vw;
  height: 100vh;

  #classV {
    margin-left: 10px;
    color: rgb(128, 236, 20);
    font-size: 16px;
  }
}
.promptDom{
  background: rgba(0,0,0,0.2);
  width: 100vw;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 50;
  opacity: 0;
  transition: all .3s linear;
  .contentDom{
    width: 4rem;
    height: 4rem;
    border-radius: .266667rem;
    background: rgba(0,0,0,0.8);
    color: white;
    text-align: center;
    font-size: .426667rem;
    position: absolute;
    left: calc(50vw - 2rem);
    top: calc(50vh - 2rem);
    .strDom{
      line-height: 1rem;
      margin: .4rem auto;
    }
    .iconDom{
      width: 1rem;
      height: 1rem;
      margin: 0 auto;
      font-size: 1rem;
      text-align: center;
      line-height: 1rem;
      animation: animate_rotate 1s linear infinite both;
    }
  }
}
@keyframes animate_rotate {
  0% {
      transform: rotate(0deg);
  }
  100% {
      transform: rotate(360deg);
  }
}